They're window vents. I got selected to have them prototyped on my car by a local company called billetworkz, so I'm rocking a set; I actually really dig the look. The reason behind them (since I'm sure someone will ask) is I guess at certain tracks your windows have to be up. This allows the cabin to get some airflow while still abiding by the track rules.

That might be cause of some compression; the lens has a very sharp cutoff and I shoot low angles so it really has that crisp line between in focus and bokeh 😍 www.flickr.com/drews-designs if you're interested in seeing better quality. I probably post them wrong on here lol